Brightness level of the internal monitor is reverted to the previous level after a few seconds

[notuxius]

When I'm changing brightness with windows hotkeys — brightness stays at the level that I changed — but when I'm changing brightness with the app slider — brightness firstly changes and then reverts — reproducible only on the internal monitor with the external monitor unplugged

[xanderfrangos]

Not sure if you ever figured this out, but this is usually caused by adaptive brightness being enabled in Windows. Here are instructions on how to disable it.

[kleenkanteen]

My brightness sometimes goes from low to full brightness for no reason. Tonight it did that twice. Went from low to full brightness. Changed it back to low. 30ish seconds later, same thing. Happened other days as well.

W10 latest version. Desktop. No adaptive brightness option.